
\begin{table}
\begin{center}
\begin{threeparttable}
\begin{tabular}{l c c}
\hline
 & M1 & M2 \\
\hline
Mean(Only donation ask)       & $0.020^{***}$ & $0.001$   \\
                              & $(0.001)$     & $(0.003)$ \\
Donation and volunteering ask & $-0.000$      & $-0.000$  \\
                              & $(0.001)$     & $(0.001)$ \\
\hline
Covariates?                   & No            & Yes       \\
R$^2$                         & $0.000$       & $0.031$   \\
Adj. R$^2$                    & $-0.000$      & $0.030$   \\
Num. obs.                     & $71952$       & $71952$   \\
\hline
\end{tabular}
\begin{tablenotes}[flushleft]
\scriptsize{\item $^{***}p<0.01$; $^{**}p<0.05$; $^{*}p<0.1$. \item Covariates include region, membership status and amount, past volunteering, fundraising and donations behaviour}
\end{tablenotes}
\end{threeparttable}
\caption{Marginal effect of Double vs single ask on 
 DV: Donated (=1), did not donate (=0), 7 days post-treatment}
\label{table:donor7days_dblask_reg}
\end{center}
\end{table}
